{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://openlineage.io/spec/facets/1-1-0/DataQualityAssertionsDatasetFacet.json",
  "$defs": {
    "DataQualityAssertionsDatasetFacet": {
      "description": "list of tests performed on dataset or dataset columns, and their results",
      "allOf": [
        {
          "$ref": "https://openlineage.io/spec/2-0-2/OpenLineage.json#/$defs/InputDatasetFacet"
        },
        {
          "type": "object",
          "required": ["assertions"],
          "properties": {
            "assertions": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "assertion": {
                    "type": "string",
                    "description": "Classification of the test, e.g. 'not_null', 'unique', 'row_count', 'freshness', 'custom_sql'.",
                    "example": "not_null"
                  },
                  "success": {
                    "type": "boolean",
                    "description": "Whether the test found issues: 'true' (no issues found), 'false' (issues found). Independent of severity - a test can fail without blocking the pipeline when severity is 'warn'."
                  },
                  "column": {
                    "type": "string",
                    "description": "Column that test refers to. It should match the name provided in SchemaDatasetFacet. If column field is empty, then test refers to whole dataset.",
                    "example": "id"
                  },
                  "severity": {
                    "type": "string",
                    "description": "The configured severity level of the assertion. Common values are 'error' (test failure blocks pipeline) or 'warn' (test failure produces warning only).",
                    "example": "error"
                  },
                  "name": {
                    "type": "string",
                    "description": "Name identifying the test.",
                    "example": "assert_no_orphans"
                  },
                  "description": {
                    "type": "string",
                    "description": "Human-readable description of what the assertion checks.",
                    "example": "Ensures all order IDs are unique across the table."
                  },
                  "expected": {
                    "type": "string",
                    "description": "The expected value or threshold for the assertion, serialized as a string.",
                    "example": "1000"
                  },
                  "actual": {
                    "type": "string",
                    "description": "The actual value observed during the assertion, serialized as a string.",
                    "example": "999"
                  },
                  "content": {
                    "type": "string",
                    "description": "The assertion body, e.g. a SQL query or expression.",
                    "example": "SELECT COUNT(*) FROM orders WHERE amount < 0"
                  },
                  "contentType": {
                    "type": "string",
                    "description": "The format of the content field, allowing consumers to interpret or filter assertion content. Common values include 'sql', 'json', 'expression'.",
                    "example": "sql"
                  },
                  "params": {
                    "type": "object",
                    "description": "Arbitrary key-value pairs for assertion-specific inputs.",
                    "additionalProperties": true
                  }
                },
                "required": ["assertion", "success"]
              }
            }
          }
        }
      ],
      "type": "object"
    }
  },
  "type": "object",
  "properties": {
    "dataQualityAssertions": {
      "$ref": "#/$defs/DataQualityAssertionsDatasetFacet"
    }
  }
}